DoubleUpDownArrow 
DoubleUpDownArrow[x,y,…]
displays as x⇕y⇕….
Details
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- DoubleUpDownArrow[x,y,…] has no built-in meaning.
- x⇕y is by default interpreted as DoubleUpDownArrow[x,y].
- ⇕ can be entered as \[DoubleUpDownArrow].
Examples
Basic Examples (1)
Wolfram Research (1996), DoubleUpDownArrow, Wolfram Language function, https://reference.wolfram.com/language/ref/DoubleUpDownArrow.html.
Text
Wolfram Research (1996), DoubleUpDownArrow, Wolfram Language function, https://reference.wolfram.com/language/ref/DoubleUpDownArrow.html.
CMS
Wolfram Language. 1996. "DoubleUpDownArrow." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/DoubleUpDownArrow.html.
APA
Wolfram Language. (1996). DoubleUpDownArrow. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/DoubleUpDownArrow.html